Transneft Volga Region is revamping the underwater crossing of Kuibyshev – Tikhoretsk oil trunk pipeline (OTP) over the Bolshoy Irgiz river in Saratov Region. Human and technical resources were mobilized, a camp was established, the work on removal of the fertile soil layer and welding of the pipeline began.
According to the schedule, in July of the current year it is planned to weld 400 m of pipeline with the diameter of 820 mm. The total length of the section to be replaced makes 1,530 m, it includes a siphon with the length of 160 m and a section in the bottomland area.
According to regulatory requirements, after welding of the siphon, primary and repeated control of welded joints, diagnostic tests using dry drawing method and hydraulic tests will be performed. Then insulation of joints and lining of the siphon will bе organized. The next stage of work on the OTP underwater crossing will include buoyancy control of the siphon.
Connection of the new section of the underwater crossing to Kuibyshev – Tikhoretsk OTP is planned for October 2017.